structure and the periodic table Flashcards
1
Q
what is matter
A
anything that takes up space
2
Q
what is matter made up of
A
atoms
3
Q
what is an atom made up of?
A
protons, electrons and neutrons
4
Q
what is an element
A
different types of atoms
5
Q
what is the symbol for hydrogen
A
H
6
Q
what is the symbol for helium
A
He
7
Q
what is the sumbol fir lithium
A
Li
8
Q
what is the symbol for beryllium
A
Be
9
Q
whats the symbol for boron
A
B
10
Q
Nitrogen
A
N
11
Q
Oxygen
A
O
12
Q
Flourine
A
F
13
Q
Neon
A
N
14
Q
Sodium
A
Na
15
Q
Magnesium
A
Mg
16
Q
Aluminium
A
Al
17
Q
Silicon
A
Si
18
Q
Phosphorus
A
P
19
Q
sulfur
A
S
20
Q
chlorine
A
Cl
21
Q
Argon
A
Ar
22
Q
Potassium
A
K
23
Q
Calcium
A
Ca
24
Q
Iron
A
Fe
25
Nickel
Ni
26
Copper
Cu
27
Zinc
Zn
28
Silver
Ag
29
Gold
Au
30
Lead
Pb
31
Iodine
I
32
Bromine
Br
33
Mercury
Hg
34
Manganese
Mn
35
Barium
Ba
36
Platinum
Pt
37
Tin
Sn
38
Chromium
Ce
39
what is the bigger number on the element block?
atomic mass
40
what is the smaller number,
atomic number
41
what is the atomic mass made uo of?
number of protons and neutrons
42
what is the atomic number made up of?
the number of protons and neutrons
43
how do we calculate the number of electrons
the atomic mass minus the atomic number
44
protons are
positively charged
45
electrons are
negative ly charged
46
what is an early model of an atoms creator called
rutherfords model
47
what is the nucleas made up of?
protons and neutrons
48
in a neutral atom, what is equal to the what
the number of protons and neutrons
49
compunds
composed of two or more elemnts joined together by chemical bonds
50
element is...
made up of one substance only, cannot be broken down
51
how do we know a chemical reaction took place?
change in colour, change in odour, production of new gases, input ot release of energy, cannot be reversed
52
what are substances which combine in a reaction called?
reactants
53
new substances produced in a reaction are called
a product
54
what is a mixture
combo of two+ substances that arent chemically combined
55
mixtures can be *what* easily
seperated
56
what is electrolysis?
chemical reaction in which an electrical current is used to decompose a compound
